Add 18/15 and 50/21, Solve 1 3/15 + 2 8/21 as a fraction

Add 18/15 and 50/21

1^st number: 1 3/15, 2^nd number: 2 8/21

18/15 + 50/21 is 376/105.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
18/15 = 18 × 7/15 × 7 = 126/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
50/21 = 50 × 5/21 × 5 = 250/105
Add the two like fractions:
126/105 + 250/105 = 126 + 250/105 = 376/105
So, 18/15 + 50/21 = 376/105
In mixed form: 361/105

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